| Afroukonline Ltd | Information & communication | 2016 |
| Afsa Friends Limited | Hospitality | 2025 |
| After 5 Cleaning Ltd | Construction | 2011 |
| After 5 Property Services Ltd | Construction | 2016 |
| After Clean Ltd | Administrative & support | 2018 |
| After Hours Express Ltd | Hospitality | 2020 |
| AG Compliance Ltd | Professional & scientific | 2021 |
| AG Consult ROM Ltd | Information & communication | 2014 |
| AG Williams Ltd | Professional & scientific | 2026 |
| AGA Cakes Bromley Limited | Wholesale & retail | 2024 |
| AGA Transport Service Ltd | Transport & logistics | 2019 |
| AGA UK Property Limited | Real estate | 2023 |
| Agcp Limited | Wholesale & retail | 2003 |
| AGE Concern Bromley | Other services | 1997 |
| AGE UK South East London Trading Ltd | Other services | 1993 |
| Agency and General Investment Co. Limited | Manufacturing | 1973 |
| Agent Ecom 247 Ltd | Wholesale & retail | 2020 |
| Agent Green Limited | Professional & scientific | 2016 |
| Agent Kaziori Limited | Information & communication | 2026 |
| Agenvo Ltd | Construction | 2023 |
| Ages Cleaning Services Ltd | Administrative & support | 2023 |
| Aggrandize Limited | Professional & scientific | 2016 |
| Aghm Property Ltd | Real estate | 2014 |
| Agico Ltd | Information & communication | 2019 |
| Agileops Development Partners Ltd | Information & communication | 2024 |
| Agilitypad Limited | Information & communication | 2021 |
| AGJ Group Holdings Ltd | Financial services | 2025 |
| AGJ Homes Limited | Real estate | 2024 |
| AGL Consulting Solutions Limited | Information & communication | 2012 |
| AGM Hospitality Limited | Hospitality | 2017 |
| AGM Plumbing Ltd | Construction | 2022 |
| Agmt Properties Ltd | Construction | 2021 |
| AGN Concerts Ltd | Arts & recreation | 2025 |
| AGN Events Ltd | Arts & recreation | 2021 |
| AGN Staffing Ltd | Administrative & support | 2025 |
| Agnes Commercial Cleaning Ltd | Administrative & support | 2015 |
| Agnitara PVT Ltd | Wholesale & retail | 2025 |
| Agrg Solutions Ltd | Construction | 2025 |
| Agro Afro Global Ltd | Wholesale & retail | 2026 |
| Agrofertrans Ltd. | Manufacturing | 2002 |
| AGS Group Limited | Administrative & support | 2008 |
| AH Consulting Group Ltd | Professional & scientific | 2026 |
| AH Smile Ltd | Health & social care | 2019 |
| AHI Education Ltd | Education | 2023 |
| Ahmad Iftikhar Limited | Wholesale & retail | 2024 |
| Ahmati Car Sales Ltd | Wholesale & retail | 2022 |
| Ahmed Property Limited | Construction | 2007 |
| AI Beaver Ltd | Information & communication | 2026 |
| AI Construction Technologies Ltd | Information & communication | 2025 |
| AI Partners (London) Ltd | Construction | 2022 |
| AI UK Partners Ltd | Professional & scientific | 2012 |
| Aiconfident Ltd | Information & communication | 2023 |
| Aiera Ltd | Wholesale & retail | 2022 |
| Aiforce Sales Labs Limited | Information & communication | 2026 |
| Aiforsite UK Ltd | Information & communication | 2022 |
| AIM 121 CIC | Education | 2022 |
| Aimc Construction Ltd | Construction | 2016 |
| Aimee Dunne Ltd | Other services | 2012 |
| Aimpro Construction Ltd | Construction | 2025 |
| Aine Compassion Limited | Wholesale & retail | 2021 |
| Air Century Ltd | Extraterritorial | 2024 |
| Air Paint Finish Ltd | Manufacturing | 2025 |
| Airnsland Residents Association Limited | Households | 1981 |
| Airobotiq Talent Ltd | Information & communication | 2025 |
| Airstream Catering Services Ltd | Hospitality | 2026 |
| Airstream Design Limited | Real estate | 2009 |
| Airtoheat Ltd | Construction | 2021 |
| Aisha Consult Limited | Professional & scientific | 2014 |
| AJ Endoscopy Ltd | Health & social care | 2022 |
| AJ Inventories Ltd | Administrative & support | 2012 |
| AJ Kenning Property Limited | Real estate | 2025 |
| AJ Management Group Ltd | Construction | 2023 |
| AJ Systems Ventures Ltd | Wholesale & retail | 2025 |
| AJA Business Solutions Ltd | Wholesale & retail | 2025 |
| Ajbfz Consulting Ltd. | Professional & scientific | 2015 |
| Ajkmarasigan Limited | Health & social care | 2025 |
| AJP Investments (London) Ltd | Real estate | 2012 |
| AJS Wellers Limited | Professional & scientific | 2008 |
| AJT Accountancy Ltd | Professional & scientific | 2012 |
| Ajvl Associates Limited | Professional & scientific | 2026 |
| AK Foods Bromley Ltd | Wholesale & retail | 2018 |
| AK Kitchfit Ltd | Construction | 2018 |
| AKANEIRO5 Limited | Information & communication | 2019 |
| Akd&P Limited | Real estate | 2017 |
| AKE Interiors Ltd | Professional & scientific | 2023 |
| Akim Electric Ltd | Manufacturing | 2021 |
| Akkerman Ltd | Financial services | 2025 |
| Akkomarkauk Ltd | Real estate | 2024 |
| Akmardin Ltd | Hospitality | 2024 |
| AKS Perfect Design Limited | Information & communication | 2024 |
| Aksr Property Ltd | Real estate | 2025 |
| Aktemur Limited | Professional & scientific | 2021 |
| AL Chalabi Ltd | Health & social care | 2015 |
| AL Durum Kebab Limited | Hospitality | 2024 |
| AL Support Services Limited | Administrative & support | 2014 |
| Alan D Hart Ltd | Other services | 2023 |
| Alasdair Estates Ltd. | Real estate | 2016 |
| Albany Court (Beckenham) Management Ltd. | Households | 1993 |
| Albany Mews Management Company (Bromley) Ltd | Households | 2003 |
| Albemarle Booking Agency Limited | Administrative & support | 1964 |